Overview Instantly recognisable as Schlumberger, these modern and bold earrings are fashioned from 18 carat white gold, set with brilliant-cut diamonds. 18 carat yellow gold 'horns' accent perfectly against the white of the diamonds. Each set with a single high quality brilliant-cut diamond of approximately 1.60 carats. Reminiscent of a comet shooting across the sky. French assay marks and signed 'Schlumberger'. Clip fittings for pierced or unpierced ears.